Family name origins & meanings
- Possibly a variant of English Shadlock, from Middle English schaken ‘to shake’ + loc ‘lock’ (found in the plural in one early example, Schakelokes). If this is right, it was either a nickname for someone with the habit of shaking back his or her long hair, or a metonymic occupational name for a jailer. Alternatively, it could be from Middle English schaklock ‘fetter’, ‘shackle’, again an occupational name for a jailer.